Cystic tumour of the atrioventricular nodal region
{{Infobox medical condition (new)
| name = Cystic tumour of the atrioventricular nodal region
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| image = Cystic tumour of the atrioventricular nodal region - very low mag.jpg
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| caption = Micrograph of a cystic tumour of the atrioventricular nodal region. H&E stain.
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| field = Cardiology, oncology
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Cystic tumour of the atrioventricular nodal region is a very rare tumour of the heart in the region of the atrioventricular node. It is also known as mesothelioma of the atrioventricular node.{{Cite journal | last1 = Paniagua | first1 = JR. | last2 = Sadaba | first2 = JR. | last3 = Davidson | first3 = LA. | last4 = Munsch | first4 = CM. | title = Cystic tumour of the atrioventricular nodal region: report of a case successfully treated with surgery. | journal = Heart | volume = 83 | issue = 4 | pages = E6 |date=Apr 2000 | doi = 10.1136/heart.83.4.e6| pmid = 10722558 | pmc=1729374}}
Presentation
It may present as a cardiac arrhythmia or as sudden cardiac death.
Pathology
Cystic tumours of the atrioventricular nodal region, true to their name, have cystic spaces, which are lined by a single layer of histomorphologically benign epithelial cells. The appearance is similar to that of lymphangioma and this is a name that has been used for this tumour.
Treatment
The treatment of cystic tumours of the atrioventricular nodal region is surgical excision.{{Cite journal | last1 = Kaminishi | first1 = Y. | last2 = Watanabe | first2 = Y. | last3 = Nakata | first3 = H. | last4 = Shimokama | first4 = T. | last5 = Jikuya | first5 = T. | title = Cystic tumor of the atrioventricular nodal region. | journal = Jpn J Thorac Cardiovasc Surg | volume = 50 | issue = 1 | pages = 37–9 |date=Jan 2002 | doi = 10.1007/bf02913485| pmid = 11855098 }}